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package testFilter;

import datapackage.AnCeBean;
import datapackage.StaticClass;
import isae.lib.InitialQuerys;
import isae.lib.ParamLogin;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


/**
 *
 * @author salim
 */
public class NewSimpleFilter implements Filter {

    private static final boolean debug = true;

    // The filter configuration object we are associated with.  If
    // this value is null, this filter instance is not currently
    // configured. 
    private FilterConfig filterConfig = null;

    public NewSimpleFilter() {
    }

    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
            throws IOException, ServletException {
        if (debug) {
            log("NewSimpleFilter:DoBeforeProcessing");
        }

    // Write code here to process the request and/or response before
    // the rest of the filter chain is invoked.

    // For example, a logging filter might log items on the request object,
    // such as the parameters.
	/*
    for (Enumeration en = request.getParameterNames(); en.hasMoreElements(); ) {
    String name = (String)en.nextElement();
    String values[] = request.getParameterValues(name);
    int n = values.length;
    StringBuffer buf = new StringBuffer();
    buf.append(name);
    buf.append("=");
    for(int i=0; i < n; i++) {
    buf.append(values[i]);
    if (i < n-1)
    buf.append(",");
    }
    log(buf.toString());
    }
     */
    }

    private void doAfterProcessing(ServletRequest request, ServletResponse response)
            throws IOException, ServletException {
        if (debug) {
            log("NewSimpleFilter:DoAfterProcessing");
        }

    // Write code here to process the request and/or response after
    // the rest of the filter chain is invoked.

    // For example, a logging filter might log the attributes on the
    // request object after the request has been processed.
	/*
    for (Enumeration en = request.getAttributeNames(); en.hasMoreElements(); ) {
    String name = (String)en.nextElement();
    Object value = request.getAttribute(name);
    log("attribute: " + name + "=" + value.toString());

    }
     */

    // For example, a filter might append something to the response.
	/*
    PrintWriter respOut = new PrintWriter(response.getWriter());
    respOut.println("<P><B>This has been appended by an intrusive filter.</B>");
     */
    }

    /**
     *
     * @param request The servlet request we are processing
     * @param response The servlet response we are creating
     * @param chain The filter chain we are processing
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet error occurs
     */
    public void doFilter(ServletRequest request, ServletResponse response,
            FilterChain chain)
            throws IOException, ServletException {

        if (debug) {
            log("NewSimpleFilter:doFilter()");
        }

        doBeforeProcessing(request, response);
        //filterConfig.getServletContext().getRequestDispatcher("login.jsp").forward(request, response);
        Throwable problem = null;
        try {
            //System.out.println("new filter ----------------------------------------------------le debut des appels");
            //response.getWriter().println("Pas disponble ... revenir plus tard");

            HttpServletRequest httprequest = (HttpServletRequest) request;
            HttpServletResponse httpresponse = (HttpServletResponse) response;
           
            //do this only when request is not for login.jsp
            if (httprequest.getRequestURI().indexOf("login.jsp") == -1) {
                HttpSession session = httprequest.getSession();
                AnCeBean param = (AnCeBean) session.getAttribute("param");
                //getting bean from isae version 0 project as a
                ParamLogin b = (ParamLogin) session.getAttribute("b");

                InitialQuerys iq = (InitialQuerys) getFilterConfig().getServletContext().getAttribute("iq");
                if (param != null) {
                    if (param.getNoChef() == 0 && param.getNoEmp() == 0) {
                      httpresponse.sendRedirect("login.jsp");
                      }
                //le bean du isae version zero,si null rediriger au login
                } else if (b != null) {
                    //si le chef n'est pas loggee-----
                    if (b.getNo() == 0) {
                        if(StaticClass.debug)System.out.println("++++filter++++ bean: b ,nochef="+b.getNo()+" --redirect to login");
                       // filterConfig.getServletContext().getRequestDispatcher("/login.jsp").forward(request, response);
                        httpresponse.sendRedirect("login.jsp");

                    } else {
                       if(StaticClass.debug)System.out.println("++++filter++++ bean: b ,nochef="+b.getNo()+" --redirect to login");
                        param.setNoChef(b.getNo());

                        String pn = iq.avoirChef(param.getNoChef());
                        param.setPrenomnomchef(pn);
                    }
                //si le chef est logger


                } //fin si b!=null
                else {
                    filterConfig.getServletContext().getRequestDispatcher("/login.jsp").forward(request, response);
                  //  httpresponse.sendRedirect("login.jsp");
                }

            }//fin de if uri != login
            if(StaticClass.debug)System.out.println("++++filter++++2/2 procede chaine");
            //procede if user is authenticated
          
            chain.doFilter(request, response);
           

        } catch (Throwable t) {
            // If an exception is thrown somewhere down the filter chain,
            // we still want to execute our after processing, and then
            // rethrow the problem after that.
            problem = t;
            t.printStackTrace();
        }

        doAfterProcessing(request, response);

        // If there was a problem, we want to rethrow it if it is
        // a known type, otherwise log it.
        if (problem != null) {
            if (problem instanceof ServletException) {
                throw (ServletException) problem;
            }
            if (problem instanceof IOException) {
                throw (IOException) problem;
            }
            sendProcessingError(problem, response);
        }
    }

    /**
     * Return the filter configuration object for this filter.
     */
    public FilterConfig getFilterConfig() {
        return (this.filterConfig);
    }

    /**
     * Set the filter configuration object for this filter.
     *
     * @param filterConfig The filter configuration object
     */
    public void setFilterConfig(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }

    /**
     * Destroy method for this filter 
     */
    public void destroy() {
    }

    /**
     * Init method for this filter 
     */
    public void init(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
        if (filterConfig != null) {
            if (debug) {
                log("NewSimpleFilter:Initializing filter");
            }
        }
    }

    /**
     * Return a String representation of this object.
     */
    @Override
    public String toString() {
        if (filterConfig == null) {
            return ("NewSimpleFilter()");
        }
        StringBuffer sb = new StringBuffer("NewSimpleFilter(");
        sb.append(filterConfig);
        sb.append(")");
        return (sb.toString());
    }

    private void sendProcessingError(Throwable t, ServletResponse response) {
        String stackTrace = getStackTrace(t);

        if (stackTrace != null && !stackTrace.equals("")) {
            try {
                response.setContentType("text/html");
                PrintStream ps = new PrintStream(response.getOutputStream());
                PrintWriter pw = new PrintWriter(ps);
                pw.print("<html>\n<head>\n<title>Error</title>\n</head>\n<body>\n"); //NOI18N

                // PENDING! Localize this for next official release
                pw.print("<h1>The resource did not process correctly</h1>\n<pre>\n");
                pw.print(stackTrace);
                pw.print("</pre></body>\n</html>"); //NOI18N
                pw.close();
                ps.close();
                response.getOutputStream().close();
            } catch (Exception ex) {
            }
        } else {
            try {
                PrintStream ps = new PrintStream(response.getOutputStream());
                t.printStackTrace(ps);
                ps.close();
                response.getOutputStream().close();
            } catch (Exception ex) {
            }
        }
    }

    public static String getStackTrace(Throwable t) {
        String stackTrace = null;
        try {
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            t.printStackTrace(pw);
            pw.close();
            sw.close();
            stackTrace = sw.getBuffer().toString();
        } catch (Exception ex) {
        }
        return stackTrace;
    }

    public void log(String msg) {
        filterConfig.getServletContext().log(msg);
    }
}
